LEF-1
a transcription factor of the TCF/LEF family. Participates in the Wnt signaling pathway and regulates T-cell receptor alpha-C enhancer function. Activates transcription of target genes in the presence of CTNNB1 and EP300. TLE1, TLE2, TLE3 and TLE4 repress transactivation mediated by LEF1 and CTNNB1. Binds DNA in a sequence-specific manner. PIAG antagonizes both Wnt-dependent and Wnt-independent activation by LEF1. Deletions in LEF1 have been observed in a subset of pre-B-cell acute lymphoblastic leukemia (B-ALL) cases. Four human isoforms produced by alternative promoter usage and alternative splicing have been described. Isoform 3 lacks the CTNNB1 interaction domain and may be an antagonist for Wnt signaling. Note: This description may include information from UniProtKB.

SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.